You could always find an inrunner that is similar in size. The Great Planes Ammo 24-33-2500 is close in size and weight.
http://www3.towerhobbies.com/cgi-bin...?&I=LXLWX1&P=7
Most of the outrunners can be mounted in either a stick mount or with a firewall mount. They will generally be cheaper than an inrunner, and are geared toward turning a larger prop more slowly with good torque.
here is a link to a lot of minimag stuff. I am sure they will have info on different motors:
http://www.rcgroups.com/forums/showthread.php?t=455206
Regards,
Gary